Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
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AfterFast, Reliable Air Duct Cleaning Across Larkspur
Air duct cleaning in Larkspur typically runs $380-$620 for a full residential system, with most jobs completed in a single visit. Our crews dispatch from the San Francisco Bay Area office and carry the equipment to handle Larkspur’s specific moisture and pollen challenges, not generic suburban dust. Call (469) 972-3151 for a written estimate before any work begins.
We’ve worked in Larkspur long enough to know the difference between a house on Magnolia Avenue catching normal Marin dust and a Baltimore Canyon home fighting redwood pollen that mats into damp duct walls. Larkspur’s sheltered valley traps marine moisture coming off the bay, and when your HVAC sits idle during mild stretches, that dampness settles into the liner. Our Air Duct Cleaning team treats the cause, not the symptom.
Why Kestrel Air Duct Cleaning Is Larkspur’s Preferred Air Duct Cleaning Company
We answer calls with a live person, 24 hours a day. No voicemail tree, no callback tomorrow. For Larkspur homeowners who’ve already been burned by a no-show or a price that changed when the van pulled up, that matters.
Our written price arrives before we touch a single vent. The Kingswell Guarantee, which governs every job we’ve done since 2004, requires it. Same with the arrival window, the clean job site, and the 365-Day Done Right Promise documented on every invoice. If the work falls short, we return and make it right at no charge. Not as a favor. In writing.
Our technicians are background-checked, uniformed, and trained on Rotobrush rotary systems, Nikro negative-pressure units, and Abatement Technologies HEPA filtration. They know Larkspur’s housing stock: the gravity floor registers in Old Town’s Victorian cottages, the mid-century ranch ducts in the flats, and the biofilm conditions that develop in Baltimore Canyon’s perpetual damp. That local knowledge changes what we bring to the job and how long we stay.
Air Duct Inspection in Larkspur
Air Duct Inspection in Larkspur starts with understanding what kind of house we’re entering, because the duct problems differ block by block. An inspection runs $180-$280 and includes video scoping of the main trunk lines, register airflow testing, and documentation of any liner damage or microbial growth. We recommend one before any cleaning in homes older than 30 years, after water intrusion, or when you smell mustiness from the vents but can’t locate the source.
Larkspur’s climate makes inspections more valuable than in drier inland markets. Ducts here stay cool and damp for long stretches, and mold can colonize liner surfaces before homeowners notice reduced airflow. Our camera finds it early.
What We Look For in Older Systems
Old Town Larkspur’s Victorian and early-1900s cottages often contain gravity floor-register configurations or retrofit ductwork never engineered for modern forced-air flow rates. We document particulate depth, joint separation, and any liner sag that creates condensation pockets. Skipping this step on these homes means missing blockages that a standard cleaning won’t clear.
Video Documentation
Every inspection includes before-and-after footage of your own ducts, not stock images. You’ll see the redwood pollen matting, the biofilm streaks, or the decades of accumulated dust. Then you’ll see it gone. That footage belongs to you, and it’s the proof that the work happened.
Residential Air Duct Cleaning in Larkspur
Residential Air Duct Cleaning in Larkspur addresses the full supply and return network, from the main trunk lines to each register boot. A typical Larkspur home runs $380-$620 depending on system size, accessibility, and whether wet extraction is needed for biofilm removal. We clean with the system under negative pressure, so dislodged debris exits the house rather than resettling in your living space.
Our process differs from standard Marin cleans because Larkspur’s conditions demand it. The marine layer that funnels into this sheltered valley keeps relative humidity elevated. When your furnace or AC rarely runs, ducts don’t dry out. That combination grows mold faster here than in Corte Madera or San Rafael just a few miles inland.
Source Removal vs. Surface Treatment
We perform source removal: physically extracting contaminants from the duct walls using brush agitation and negative-air extraction. This strips the biofilm that holds mold food. A fogging “sanitizer” only wets the surface and leaves the underlying material intact. We don’t sell fogging as a solution because it isn’t one.
The 365-Day Done Right Promise
Every residential cleaning carries our written guarantee. If odors return, airflow drops, or you spot debris we missed, call us within a year. We come back and correct it at no charge. The promise is on your invoice, not our website. That’s the Kingswell Way.
Trusted Brands We Service in Larkspur
We clean duct systems connected to every major HVAC manufacturer, and we stock Honeywell, Aprilaire, and Guardsman filtration products for Larkspur homeowners who want to maintain clean air between service visits. Our technicians arrive with replacement media for Honeywell electronic air cleaners and Aprilaire whole-house filters, so upgrades happen same-day rather than after a parts order. For homes in Larkspur’s higher-pollen zones, particularly near the Baltimore Canyon trail system, we often recommend Aprilaire’s MERV 16 options to capture the fine redwood particulate that standard fiberglass filters pass through. We don’t sell equipment we haven’t tested in local conditions.
Common Air Duct Cleaning Problems We See in Larkspur Homes
- Biofilm buildup in Baltimore Canyon. Redwood pollen events in late winter and early spring deposit waxy organic particulate into return-air intakes. In the canyon’s near-constant moisture, this mats onto duct walls into a film that standard dry brushing skims over without stripping. Wet extraction is required.
- Mold colonization on duct liner in gravity systems. Old Town Larkspur’s vintage cottages often have original or retrofit ducts that run cool and damp for months. Mold takes hold on the liner surface, producing musty odors that homeowners mistake for general humidity.
- Particulate accumulation in mismatched duct generations. Mid-century ranch homes in Larkspur frequently contain duct sections added at different decades, with incompatible diameters and flow rates. Debris settles at the transition points where airflow drops.
- Lint trap bypass in dryer vents. Even in Larkspur’s mild climate, restricted dryer vents force exhaust past the lint screen and into the duct run. We find this regularly in homes where the vent path exceeds 15 feet or has multiple elbows.
Pricing for Air Duct Cleaning in Larkspur, CA
Most full residential cleanings in Larkspur fall between $380 and $620. A straightforward ranch home with accessible ducts and no biofilm issues sits at the lower end. Baltimore Canyon properties requiring wet extraction, HEPA-contained negative pressure, and extended agitation time run higher. Commercial systems and multi-zone residential setups are priced per system after inspection.
We give one flat price per system, agreed in writing before work starts. No per-vent pricing. No add-ons at the door. The estimate is free, and it includes the inspection footage you’ll review with the technician.
What moves the price: system size (number of supply and return registers), duct accessibility (crawl space vs. basement), presence of biofilm requiring wet extraction, and whether the home has a separate HVAC zone for an addition or converted space. We don’t quote over the phone for biofilm-suspected jobs; we inspect first so the price is accurate.
| Service | Typical Range in Larkspur |
|---|---|
| Air Duct Inspection | $180-$280 |
| Residential Full System Cleaning | $380-$620 |
| Commercial Duct Cleaning | Quoted per system after inspection |
| Dryer Vent Cleaning | $150-$220 |
Call (469) 972-3151 for your free estimate. We’ll schedule the inspection, show you your own duct footage, and put the written price in your hands before any cleaning begins.
We Also Serve Cities Near Larkspur
Our crews work throughout central Marin County. We regularly clean ducts in Larkspur and neighboring Kentfield, Corte Madera, San Rafael, and Mill Valley. Each community has distinct conditions: Kentfield’s hillside exposure, San Rafael’s broader valley humidity patterns, Mill Valley’s canyon microclimates. We adjust our approach to match, rather than applying a single template across zip codes.
Serving Larkspur, CA - Our Local Coverage Area
We’re based in the Larkspur area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Air Duct Cleaning in Larkspur
Larkspur’s sheltered valley traps marine moisture longer than Corte Madera’s more exposed terrain, and the city’s older housing stock includes gravity systems and retrofit ducts that never fully dry. When HVAC runs infrequently during mild weather, mold and mildew colonize the liner. Call (469) 972-3151 if you’re smelling mustiness from your registers; we’ll inspect and give you a written price before any work starts.
A standard dry-brush cleaning often fails to remove redwood pollen in Larkspur because the pollen binds with moisture into a waxy biofilm that brushes skim over. We use wet-extraction steps and targeted agitation for these conditions, which we encounter frequently in Baltimore Canyon and near the redwood canopy zones. The inspection will show whether your system needs this enhanced protocol.
No. Fogging wets the duct surface but does not remove the biofilm that feeds mold regrowth. In Larkspur’s damp climate, that biofilm regrows within weeks. We perform source removal instead: physically extracting the contaminated material so there’s nothing left to regrow. We don’t sell fogging services because they don’t solve the problem our customers call us about.
Expect gravity floor-register configurations or early retrofit ductwork with decades of particulate accumulation, often at flow rates incompatible with modern HVAC equipment. We camera-inspect these systems carefully because blockages and liner damage hide in generations-old runs that standard cleaning assumptions don’t fit. The inspection cost is $180-$280, and we’ll show you exactly what we’re dealing with before quoting the cleaning.
Coastal redwood pollen events peak during these months, and in Larkspur’s trapped marine moisture the pollen deposits into return-air intakes and begins binding into biofilm immediately. Cleaning before this material sets hard makes extraction easier and prevents the musty odor complaints we see by summer. Call (469) 972-3151 to schedule before the peak pollen period.
Written by Dale Whitmore, Owner at Kestrel Air Duct Cleaning, serving Larkspur under the Kingswell Guarantee since 2004.